<?php
  class smtp
  {
    var $smtp_port;
    var $time_out;
    var $host_name;
    var $log_file;
    var $relay_host;
    var $debug;
    var $auth;
    var $user;
    var $pass;
    var $sock; 

    function smtp($relay_host = "", $smtp_port = 25,$auth = false,$user,$pass)
    {
      $this->debug = true;
      $this->smtp_port = $smtp_port;
      $this->relay_host = $relay_host;
      $this->time_out = 30; 
      $this->auth = $auth;
      $this->user = $user;
      $this->pass = $pass;
      $this->host_name = "localhost"; 
      $this->log_file ="";
      $this->sock = FALSE;
    } 

    function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "")
    {
      $mail_from = $this->get_address($this->strip_comment($from));
      $body = ereg_replace("(^|(\r\n))(\\.)", "\\1.\\3", $body);
      $header .= "MIME-Version:1.0\r\n";
      if($mailtype=="HTML")
      {
        $header .= "Content-Type:text/html\r\n";
      }
       
      $header .= "To: ".$to."\r\n";
      if ($cc != "")
      {
        $header .= "Cc: ".$cc."\r\n";
      }
      $header .= "From: $from<".$from.">\r\n";
      $header .= "Subject: ".$subject."\r\n";
      $header .= $additional_headers;
      $header .= "Date: ".date("r")."\r\n";
      $header .= "X-Mailer:By Redhat (PHP/".phpversion().")\r\n";
      list($msec, $sec) = explode(" ", microtime());
      $header .= "Message-ID: <".date("YmdHis", $sec).".".($msec*1000000).".".$mail_from.">\r\n";
      $TO = explode(",", $this->strip_comment($to));
      
      if ($cc != "") {
        $TO = array_merge($TO, explode(",", $this->strip_comment($cc)));
      }
      if ($bcc != "") {
        $TO = array_merge($TO, explode(",", $this->strip_comment($bcc)));
      }
      
      $sent = TRUE;
      foreach ($TO as $rcpt_to) {
        $rcpt_to = $this->get_address($rcpt_to);
        if (!$this->smtp_sockopen($rcpt_to)) {
          $this->log_write("Error: Cannot send email to ".$rcpt_to."\n");
          $sent = FALSE;
          continue;
        }
        if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) {
          $this->log_write("E-mail has been sent to <".$rcpt_to.">\n");
        } else {
          $this->log_write("Error: Cannot send email to <".$rcpt_to.">\n");
          $sent = FALSE;
        }
        fclose($this->sock);
        $this->log_write("Disconnected from remote host\n");
      }
      echo "<br>";
      echo $header;
      return $sent;
  }
  
  /* Private Functions */
  
  function smtp_send($helo, $from, $to, $header, $body = "")
  {
    if (!$this->smtp_putcmd("HELO", $helo)) {
      return $this->smtp_error("sending HELO command");
    }
    #auth
    if($this->auth){
    if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user))) {
      return $this->smtp_error("sending HELO command");
    }
    
    if (!$this->smtp_putcmd("", base64_encode($this->pass))) {
      return $this->smtp_error("sending HELO command");
    }
    }
    #
    if (!$this->smtp_putcmd("MAIL", "FROM:<".$from.">")) {
      return $this->smtp_error("sending MAIL FROM command");
    }
    
    if (!$this->smtp_putcmd("RCPT", "TO:<".$to.">")) {
      return $this->smtp_error("sending RCPT TO command");
    }
    
    if (!$this->smtp_putcmd("DATA")) {
      return $this->smtp_error("sending DATA command");
    }
    
    if (!$this->smtp_message($header, $body)) {
      return $this->smtp_error("sending message");
    }
    
    if (!$this->smtp_eom()) {
      return $this->smtp_error("sending <CR><LF>.<CR><LF> [EOM]");
    }
    
    if (!$this->smtp_putcmd("QUIT")) {
      return $this->smtp_error("sending QUIT command");
    }
    
    return TRUE;
  }
  
  function smtp_sockopen($address)
  {
    if ($this->relay_host == "") {
      return $this->smtp_sockopen_mx($address);
    } 
    else {
      return $this->smtp_sockopen_relay();
    }
  }
  
  function smtp_sockopen_relay()
  {
    $this->log_write("Trying to ".$this->relay_host.":".$this->smtp_port."\n");
    $this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);
    if (!($this->sock && $this->smtp_ok())) {
    $this->log_write("Error: Cannot connenct to relay host ".$this->relay_host."\n");
    $this->log_write("Error: ".$errstr." (".$errno.")\n");
    return FALSE;
    }
    $this->log_write("Connected to relay host ".$this->relay_host."\n");
    return TRUE;;
  }
  
  function smtp_sockopen_mx($address)
  {
    $domain = ereg_replace("^.+@([^@]+)$", "\\1", $address);
    if (!@getmxrr($domain, $MXHOSTS)) {
    $this->log_write("Error: Cannot resolve MX \"".$domain."\"\n");
    return FALSE;
    }
    foreach ($MXHOSTS as $host) {
    $this->log_write("Trying to ".$host.":".$this->smtp_port."\n");
    $this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);
    if (!($this->sock && $this->smtp_ok())) {
    $this->log_write("Warning: Cannot connect to mx host ".$host."\n");
    $this->log_write("Error: ".$errstr." (".$errno.")\n");
    continue;
    }
    $this->log_write("Connected to mx host ".$host."\n");
    return TRUE;
    }
    $this->log_write("Error: Cannot connect to any mx hosts (".implode(", ", $MXHOSTS).")\n");
    return FALSE;
  }
  
  function smtp_message($header, $body)
  {
    fputs($this->sock, $header."\r\n".$body);
    $this->smtp_debug("> ".str_replace("\r\n", "\n"."> ", $header."\n> ".$body."\n> "));
    return TRUE;
  }
  
  function smtp_eom()
  {
    fputs($this->sock, "\r\n.\r\n");
    $this->smtp_debug(". [EOM]\n");
    
    return $this->smtp_ok();
  }
  
  function smtp_ok()
  {
    $response = str_replace("\r\n", "", fgets($this->sock, 512));
    $this->smtp_debug($response."\n");
    
    if (!ereg("^[23]", $response)) {
    fputs($this->sock, "QUIT\r\n");
    fgets($this->sock, 512);
    $this->log_write("Error: Remote host returned \"".$response."\"\n");
    return FALSE;
    }
    return TRUE;
  }
  
  function smtp_putcmd($cmd, $arg = "")
  {
    if ($arg != "") {
      if($cmd=="") $cmd = $arg;
      else $cmd = $cmd." ".$arg;
    }
    
    fputs($this->sock, $cmd."\r\n");
    $this->smtp_debug("> ".$cmd."\n");
    
    return $this->smtp_ok();
  }
  
  function smtp_error($string)
  {
    $this->log_write("Error: Error occurred while ".$string.".\n");
    return FALSE;
  }
  
  function log_write($message)
  {
    $this->smtp_debug($message);
    
    if ($this->log_file == "") {
      return TRUE;  
    }
    
    $message = date("M d H:i:s ").get_current_user()."[".getmypid()."]: ".$message;
    if (!@file_exists($this->log_file) || !($fp = @fopen($this->log_file, "a"))) {
    $this->smtp_debug("Warning: Cannot open log file \"".$this->log_file."\"\n");
    return FALSE;
    }
    flock($fp, LOCK_EX);
    fputs($fp, $message);
    fclose($fp);
    
    return TRUE;
  }
  
  function strip_comment($address)
  {
    $comment = "\\([^()]*\\)";
    while (ereg($comment, $address)) {
      $address = ereg_replace($comment, "", $address);
    }
    
    return $address;
  }
  
  function get_address($address)
  {
    $address = ereg_replace("([ \t\r\n])+", "", $address);
    $address = ereg_replace("^.*<(.+)>.*$", "\\1", $address);
    
    return $address;
  }
  
  function smtp_debug($message)
  {
    if ($this->debug) {
    echo $message."<br>";
    }
  }
  
  function get_attach_type($image_tag) { //
  
    $filedata = array();
    
    $img_file_con=fopen($image_tag,"r");
    unset($image_data);
    while ($tem_buffer=AddSlashes(fread($img_file_con,filesize($image_tag))))
    $image_data.=$tem_buffer;
    fclose($img_file_con);
    
    $filedata['context'] = $image_data;
    $filedata['filename']= basename($image_tag);
    $extension=substr($image_tag,strrpos($image_tag,"."),strlen($image_tag)-strrpos($image_tag,"."));
    switch($extension){
    case ".gif":
    $filedata['type'] = "image/gif";
    break;
    case ".gz":
    $filedata['type'] = "application/x-gzip";
    break;
    case ".htm":
    $filedata['type'] = "text/html";
    break;
    case ".html":
    $filedata['type'] = "text/html";
    break;
    case ".jpg":
    $filedata['type'] = "image/jpeg";
    break;
    case ".tar":
    $filedata['type'] = "application/x-tar";
    break;
    case ".txt":
    $filedata['type'] = "text/plain";
    break;
    case ".zip":
    $filedata['type'] = "application/zip";
    break;
    default:
    $filedata['type'] = "application/octet-stream";
    break;
  }
  return $filedata;
  }
}
  
